redhat-developer / redhat-developer/vscode-java
JDT-LS doesn't detect Java 19 installation in standard location
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Description
On my machine, I have Java 19 installed in a standard location. Both CLI or Eclipse IDE do find it properly apparently. When trying to open a project defined in Eclipse IDE and that requires Java 19 (working fine in Eclipse IDE), vscode-java throws tons of errors with no assistance/quickfix to remediate those.
Environment
- Operating System: Fedora 38
- JDK version: Java 19
- Visual Studio Code version: ?
- Java extension version: 0.25.10
Steps To Reproduce
- On my Fedora, Java 19 is installed with usual
dnf install java-openjdk-latest - Generate a dummy project in Eclipse IDE targeting Java 19; play with it a bit to verify Eclipse IDE can deal with it
- Import the project in VSCode with Java extension
Current Result
Unbound classpath container: 'JRE System Library [JavaSE-19]' in project 'sandboxJava' message and tons of unresolved types from the JRE
Expected Result
Everything fine
Additional Informations
I would expect JDT-LS to detect Java 19 from such a standard directory; and also to provide an helpful quickfix about remediation (even just linking to documentation would be better)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the attached testProject.zip and reproduce the import on Fedora 38 with Java 19 installed via dnf install java-openjdk-latest. Trace how the Java extension and JDT-LS resolve the JRE System Library [JavaSE-19] entry. Done means the project imports without unresolved JRE types, or the user receives actionable remediation guidance.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, typescript, vscode
- Domain
- developer-experience, tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100